linux-kernel - Re: [PATCH v6 2/4] x86/tests: Add tests for AMD SEV-ES #VC handling

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Message-ID: <YlVRALeMEv6IhhVr@zn.tnic>
Date:   Tue, 12 Apr 2022 12:14:24 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Vasant Karasulli <vkarasulli@...e.de>
Cc:     linux-kernel@...r.kernel.org, jroedel@...e.de, kvm@...r.kernel.org,
        x86@...nel.org, thomas.lendacky@....com, varad.gautam@...e.com
Subject: Re: [PATCH v6 2/4] x86/tests: Add tests for AMD SEV-ES #VC handling

On Fri, Mar 18, 2022 at 11:46:44AM +0100, Vasant Karasulli wrote:
>  Add KUnit based tests to validate Linux's
>  VC handling for instructions cpuid and wbinvd.

This looks like a commit message title to me.

Also, please write x86 instructions in all caps: CPUID and WBINVD.

>  These tests:
>    1. install a kretprobe on the #VC handler (sev_es_ghcb_hv_call, to
>       access GHCB before/after the resulting VMGEXIT).
>    2. trigger an NAE by executing either cpuid or wbinvd.
>    3. check that the kretprobe was hit with the right exit_code
>       available in GHCB.

Yes, I'd appreciate a short step-by-step thing how to run them or a
pointer to the docs.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette